Blood glucose levels vary, depending on a person’s health status and whether they have eaten. People without diabetes typically have between 72–140 milligrams of glucose per 1 deciliter of blood.

Around 20–40% of the general population are estimated to have insulin resistance—a condition where insulin begins to be less effective in the body, and glucose regulation becomes more difficult.

One of the best-known brands in diabetes gear is FreeStyle, made by Abbott Diabetes Care. Traditional fingerstick glucose meters and test strips have been their bread and butter for over 2 decades, ...